Science
Human Respiratory System
Grade 8 · Middle School
Answer every question first, then press Finish to see your score and explanations.
- Question 1 of 20Easy
The exchange of oxygen and carbon dioxide in the lungs happens in the ...
- Question 2 of 20Easy
The membrane that surrounds the lungs is called the ...
- Question 3 of 20Easy
The muscle that plays the main role in abdominal breathing is the ...
- Question 4 of 20Easy
The correct path of air during breathing is ...
- Question 5 of 20Easy
The trachea is made of rings of cartilage that function to ...
- Question 6 of 20Easy
The fine hairs inside the nasal cavity function to ...
- Question 7 of 20Medium
In chest breathing, inhalation occurs when the intercostal muscles ...
- Question 8 of 20Medium
The exchange of O2 and CO2 in the alveoli happens by ...
- Question 9 of 20Medium
Vital capacity of the lungs is the sum of ...
- Question 10 of 20Medium
The volume of air entering or leaving the lungs during normal breathing is called ... volume.
- Question 11 of 20Medium
The normal breathing rate of an adult is about ... times per minute.
- Question 12 of 20Medium
A respiratory disease marked by narrowing of the airways and shortness of breath due to allergy is ...
- Question 13 of 20Medium
The function of mucus in the nasal cavity is to ...
- Question 14 of 20Medium
In abdominal breathing, exhalation occurs when the diaphragm ...
- Question 15 of 20Hard
If the tidal volume is 500 mL and the breathing rate is 12 times per minute, the breathing volume per minute is ...
- Question 16 of 20Hard
Tuberculosis (TB) of the lungs is caused by ...
- Question 17 of 20Hard
Oxygen moves from the alveoli into the blood because ...
- Question 18 of 20Hard
Smoking can cause respiratory disorders because ...
- Question 19 of 20Hard
The difference between chest breathing and abdominal breathing lies in ...
- Question 20 of 20Hard
The air remaining in the lungs that cannot be exhaled is called ...